数字车载音响系统设计

介绍了新型数字多媒体存储式智能车载音响系统的解决方案。采用高效率的开关电源实现了省电模式下低功耗操作。单片机通过I2C总线控制收音、MP3解码、音效处理芯片相应的寄存器，分别实现数字调频立体收音、音频解码、音效处理功能。该系统融入了智能自检、异常应错机制，实现了记忆操作及MP3续播功能，且优化了用户操作及视听感受。

Design of digital car audio system

This paper mainly introduces a solution of new digital storage smart car audio system. By using high-efficiency switching power supply, the lower power consumption can be achieved in power-saving mode. The MCU controls the corresponding registers of radio, MP3 decoder and audio processing chip by the I2C bus to implement the digital tuned stereo radio, audio decoding, audio processing functions. In order to achieve the operating memory and continuous playback function of MP3, and the optimization of the user operation and audio-visual experience, the system integrated into the intelligent serf-checking and error correction mechanism.